parser: fix a bug with complex ref fn args

vlib/compiler/tests/fn_test.v

@@ -21,6 +21,8 @@ multi line comment (3)
 	multi line comment (2)
 */
 
+import time
+
 type myfn fn (int) string
 
 type myfn2 fn (a int, b int) int
@@ -119,3 +121,29 @@ fn test_fns() {
 	// no asserts for now, just test function declarations above
 }
 
+struct Foo {
+}
+
+
+fn process_foo(foo &Foo) {
+}
+
+fn get_foo() Foo {
+        return Foo{}
+}
+
+
+// This used to be broken.
+fn test_ref_fn_arg() {
+	process_foo(get_foo())
+	println(3434)
+	assert true
+	
+	/*
+	res := (time.random().calc_unix())
+	println(res)
+	assert true
+	*/
+	
+}	
+